Improvement in grate-bars



1. A. SINCLAIR.

Grate-Bars.

N0. l64,40I Patentedlunel5,1875.

U NrrEn STATES PATENT QFFICE.

JAMES A. SINCLAIR, OF BR-IDGEPORT, OHIO, ASSIGNQR TO ABRAM LASH ANDADONIRAM D. NEWLAND. I

IMPROVEMENT IN GRATE-BARS.

Specification forming part ofLetteIs Patent No. 164,401, datc d June 15,1875; application filed September 24, 1874.

To all whom it may concern:

Be it known that I, JAMES A. SINCLAIR, of Bridgeport, county of Belmontand State pgfOhio, have in vented Improvements in Gratears.

The following description, taken in connection with the accompanyingplate of drawings hereinafter referred to, forms a full and exactspecification, wherein are set forth the nature and principles of theinvention, by which the same may be distinguished from others of asimilar class, together with such parts thereof as are claimed as newand are desired to be secured by Letters Patent of the United States.

My invention relates to that class of grates in which the bars are madeto reciprocate in reverse directions and the nature thereof consists incertain improvements in the details of the construction of the same, andnovel combinations of the parts thereof, hereinafter shown anddescribed.

In the accompanying plate of drawings, in which corresponding parts areillustrated by similar letters, Figure l is a top view. Fig. 2illustrates in detail one of the bars. Fig. 3 is a view of theoperatinglever.

A designates the grate, which is arranged, in the ordinary manner, overthe ash-box, and is provided with projections b, which. form a series ofslots, 0, in which are placed the bars d. The said bars are of the formclearly shown in Fig. 2, and are provided with upwardly-projecting lugs,having intervals between them, which shield the bar from the intenseheat. The said bar is also provided with projections d, the under sidesof which may be either parallel with the top of the bar or at an angletherewith. In the latter case the movement of the bar will be not onlyin the horizontal direction, but also in the vertical plane. The end ofthe said bar is provided with a projecting lug, g, of proper size to fitthe apertures in the operating-lever.

The operating-lever It consists of a plate provided with apertures 70,and having a handle, m. The lugs g are inserted in the apertures k, andthe handle m is moved backward and forward. This movement causes thebars on each side of the handle to reciprocate in reverse directionsalternately, and effects the removal of the ashes and clinkers with thegreatest facility.

Bars of this construction can be placed on the same bearing as thatoccupied by common bars without change of construction, and have abouttwenty-five per cent. more air-space than the common bars.

Having thus described the construction and operation of myinvention,Iclaim and desire to secure by Letters Patent of the United States Thebars, having bearings d and projecting lugs g, in combination with theoperating-lever h, having a handle, m, and aperture 70, into which thelugs g are inserted, as and for the purposes described.

In testimony that I claim the foregoing, I have hereunto set my handthis 6th day of July, 1874.

JAS. A. SINCLAIR.

Witnesses:

T. O. ROWLES, S. OPPENHEIMER.

